A guide to work with MySQL and it's syntax, CRUD, data types, transactions, sub selects, views, and store routines. MySQL is by far the most popular database management system for small- to medium-sized web projects. Only the proprietary Oracle database and the small embeddable SQLite are more widely deployed. MySQL is named after the eldest daughter of Ulf Michael Widenius, the main author of the original version of MySQL whose daughter's name is My.